diff --git a/Bin/net40/SunnyUI.dll b/Bin/net40/SunnyUI.dll
index 7bf01a3d..e0f37aea 100644
Binary files a/Bin/net40/SunnyUI.dll and b/Bin/net40/SunnyUI.dll differ
diff --git a/Bin/net462/SunnyUI.dll b/Bin/net462/SunnyUI.dll
index ce278e35..f82a45c7 100644
Binary files a/Bin/net462/SunnyUI.dll and b/Bin/net462/SunnyUI.dll differ
diff --git a/Bin/net5.0-windows/SunnyUI.dll b/Bin/net5.0-windows/SunnyUI.dll
index a01c8af5..0a1e4d80 100644
Binary files a/Bin/net5.0-windows/SunnyUI.dll and b/Bin/net5.0-windows/SunnyUI.dll differ
diff --git a/Bin/netcoreapp3.1/SunnyUI.dll b/Bin/netcoreapp3.1/SunnyUI.dll
index 9d4b3dc4..8908c734 100644
Binary files a/Bin/netcoreapp3.1/SunnyUI.dll and b/Bin/netcoreapp3.1/SunnyUI.dll differ
diff --git a/SunnyUI/Controls/UITabControl.cs b/SunnyUI/Controls/UITabControl.cs
index 4556d0d7..bb3742b2 100644
--- a/SunnyUI/Controls/UITabControl.cs
+++ b/SunnyUI/Controls/UITabControl.cs
@@ -589,8 +589,9 @@ namespace Sunny.UI
                 }
             }
 
-            TabPages.Remove(TabPages[index]);
+            TabPages.Remove(tabPage);
             AfterRemoveTabPage?.Invoke(this, index);
+            tabPage.Dispose();
 
             if (TabCount == 0) return;
             if (index == 0) SelectedIndex = 0;